Study On Change Of Main Flavour Composition In Preserved Ham During Processing

Preserved meat, as the traditional meat products in china, has more than one thousand years' history and a mind - boggling bazaar because of its beauty, taste, luster and convenience for hoarding .In our country, People have a great deal of experiences of producing preserved meat. There are many kinds of preserved ham in china, and the mothods of classification are in accordance with areas.There are obvious differences between preserved meat and other meat products. The flavor composition of preserved meat is fairly complex. In order to research the mechanism and process of the main flavour composition systematically, the flavor composition was trapped with SDE, the composition was concentrated with revolved and evaporated instrument and the qualitative and quantitative character- izations of the extract was performed by means of GC/ MS. The comparable percent of compositions was defined with method of inside marks.1. The preserving composition is:NaC12.5%,Vc0.3%,NaNo20.015%,sugar 1% and wine 1 %.The manufactured process is: meat→cutting→smoked→dried→products. The parameter is: preserving time is 48 hours in 4℃ .dried time is 2 hours, roasted temperature is 60℃ .humidity is 75 % and roasted time is 36 hours.2. The condition of GC/MS is that capillary column: DB-5ms ( 30m×0.25mm×0.25um); column temperature:60℃(2min)→300℃,5℃C/min;carrier gas: He, 1ml/min; injected quantity:0.6ul; ionization voltage: 70eV; Nist, Willy, Nbs.3. The results show:91 flavor constituents were identified by GC/MS data, including 11 kinds of phenol, 10 kinds of alcohol, 8kindsofcarbonyl , 19 kinds of hydrogen , 25 kinds of ester and 3 kinds of fatty acid. The compositions During four processing period were identified as follows: In the first period: no phenol. 1 kind of carbonyl, 7 kinds of hydrogen, 7 kinds of alcohol , 11 kinds of ester, 2 kinds of aether and 2 kinds of fatty acid. In the second period: 7 kinds of phenol ,4 kinds of carbonyl, 8 kinds of hydrogen, 8 kinds of alcohol , 10 kinds of ester, 1 kind of ester and 3 kinds...